func BenchmarkWalkN(b *testing.B) {
var list error
for i := 1; i <= listLen; i++ {
list = errors.Append(list, fmt.Errorf("number %v", i))
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
errors.WalkN(list, attentionSpan, func(e error) {
_ = e
})
}
}
func ExampleWalkN() {
var list error
for i := 1; i <= 1000; i++ {
list = errors.Append(list, fmt.Errorf("number %v", i))
}
errors.WalkN(list, 3, func(e error) {
// In real code, this should generally use os.Stderr, but
// https://code.google.com/p/go/issues/detail?id=4550
// broke that for examples.
fmt.Fprintln(os.Stdout, e)
})
// Output:
// number 1
// number 2
// number 3
}